From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 1092/CH2/EX2.7/Example2_7.sce | 47 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100755 1092/CH2/EX2.7/Example2_7.sce

(limited to '1092/CH2/EX2.7')

diff --git a/1092/CH2/EX2.7/Example2_7.sce b/1092/CH2/EX2.7/Example2_7.sce
new file mode 100755
index 000000000..937306a41
--- /dev/null
+++ b/1092/CH2/EX2.7/Example2_7.sce
@@ -0,0 +1,47 @@
+// Electric Machinery and Transformers
+// Irving L kosow 
+// Prentice Hall of India
+// 2nd editiom
+
+// Chapter 2: Dynamo Construction and Windings
+// Example 2-7
+
+clear; clc; close; // Clear the work space and console.
+
+// Given data
+slots = 72; // No. of slots
+P = 6; // No. of poles
+phase =3; // three phase stator armature
+N_c = 20; // Number of turns per coil
+pitch = 5 / 6;
+phi = 4.8e+6; // flux per pole in lines
+S = 1200; // Rotor speed
+
+// Calculations
+f = ( P * S )/ 120; // Frequency of rotor
+
+E_g_percoil = 4.44 * phi * N_c * f *10 ^ -8; // Generated effective voltage
+// per coil of a full pitch coil
+
+N_p = ( slots / phase ) * N_c; // Total number of turns per phase
+
+n = slots / ( phase * P ); // No. os slots per pole per phase
+
+alpha = ( P * 180 ) / slots; // No. of electrical degrees between adjacent slots
+
+k_d = sind( n * alpha / 2 ) / ( n * sind( alpha / 2 ) ); // Distribution factor
+
+span = pitch * 180; // Span of the coil in electrical degrees
+
+k_p = sind( span / 2 ); // Pitch factor
+
+E_gp = 4.44 * phi * N_p * f * k_p * k_d * 10 ^ -8; // Total generated voltage
+// per phase considering kp and kd
+
+// Display the result
+disp("Example 2-7 Solution : ")
+printf("\n a: Eg/coil = %.2f V/coil", E_g_percoil );
+printf("\n b: Np = %d turns/phase ", N_p );
+printf("\n c: kd = %.3f ", k_d );
+printf("\n d: kp = %.3f ", k_p );
+printf("\n e: Egp = %.2f V/phase ", E_gp );
-- 
cgit